National Geographic have shared the cutest video on their official Instagram page.
It features diver Bertie Gregory swimming alongside his big bull steller sea lion friends. As they pretty much engulf him, he says "This might look intimidating but it's not. They don't have hands so when they bite me, it's just trying to work out what I am."
We're not sure we would remain so calm...
The description says "I'd compare it to playing with 50 giant puppies."
Again, we're not fully convinced...